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The final version of Windows 10 comes with Microsoft´s new Edge browser which is lightining fast. If you activate the hidden asm.js setting, Edge becomes even faster.
Asm.js a subset of Javascript which allows for incredible performance gains. Normal programming code in C can be automatically compiled to ASM.js and then run directly in Microsoft Edge.
 –> Unity WebGL Benchmark with asm.js: Microsoft Edge vs. Google Chrome 44 vs. Firefox 39
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–>ASM.JS ONLY! Benchmarking ASM.JS JavaScript performance of Microsoft Edge vs.
Google Chrome 44 vs. Firefox 39
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The version of Edge coming with Windows 10 has asm.js turned off as Microsoft is still working on a fully stable implementation. If want to enable asm.js on Microsoft Edge, you can do it in the hidden flags-settings.
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1. Open the hidden developer settings menu
Type about:config or about:flags in the address bar. This opens the developer settings menu of Microsoft Edge.
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2. Enable asm.js in the JavaScript section
Scroll down to JavaScript and Enable asm.js. You can also Enable experimental JavaScript features, which might also add a bit to performance. If you face any stability issues with Edge, you can easily deactivate those two options again.
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